Juniperus plant named ‘Little Joanna’

ABSTRACT

A new cultivar of  Juniperus squamata  named ‘Little Joanna’ that is characterized by its very compact, well-branched and creeping plant habit, its foliage that is intense steel blue in color, and its average height of about 15 cm and an average spread of 75 cm when mature.

Botanical classification: Juniperus squamata.

Varietal denomination: ‘Little Joanna’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar ofJuniperus squamata and will be referred to hereafter by its cultivarname, ‘Little Joanna’. ‘Little Joanna’ is a new cultivar of juniper, anevergreen shrub grown for use as an ornamental landscape plant.

The Inventors discovered the new cultivar in June of 2003 as a naturallyoccurring branch mutation of Juniperus squamata ‘Blue Carpet’ (notpatented) that was growing in a container at their nursery inLippenhuizen, The Netherlands.

Asexual propagation of the new cultivar was first accomplished by one ofthe Inventors using semi-hardwood cuttings in 2003 in Lippenhuizen, TheNetherlands. Asexual propagation by semi-hardwood cuttings hasdetermined that the characteristics of the new cultivar are stable andare reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

The following traits have been repeatedly observed and represent thecharacteristics of the new cultivar. These attributes in combinationdistinguish ‘Little Joanna’ as a unique cultivar of Juniperus.

-   -   1. ‘Little Joanna’ exhibits a very compact, well-branched and        creeping plant habit.    -   2. ‘Little Joanna’ exhibits foliage that is intense steel blue        in color.    -   3. ‘Little Joanna’ exhibits an average height of about 15 cm and        an average spread of 75 cm when mature.        The parent plant, ‘Blue Carpet’, differs from ‘Little Joanna’ in        having a less compact plant habit, less dense branching, and        foliage color that is less intense and grey-blue. In addition,        ‘Little Joanna’ can be compared to Juniperus procumbens cultivar        ‘Nana’ (not patented) and Juniperus squamata cultivar ‘Blue        Star’ (not patented). ‘Nana’ is similar to ‘Little Joanna’ in        foliage coloration and in having a creeping plant habit, but        differs from ‘Little Joanna’ in having a less compact and less        branched plant habit, in having foliage coloration that is less        intense, and in being taller in height. ‘Blue Star’ is similar        to ‘Little Joanna’ in foliage coloration, but differs from        ‘Little Joanna’ in having a less creeping plant habit.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying colored photographs illustrate the overall appearanceand distinct characteristics of the new Juniperus. The photographs weretaken of a plant nine months in age as grown outdoors in a 13-cmcontainer in Lippenhuizen, The Netherlands.

The photograph in FIG. 1 provides a side view of ‘Little Joanna’ andillustrates its plant habit.

The photograph in FIG. 2 provides a close-up view of the foliage of‘Little Joanna’.

The colors in the photographs are as close as possible with thephotographic and printing technology utilized and the color values citedin the detailed botanical description accurately describe the colors ofthe new Juniperus.

DETAILED BOTANICAL DESCRIPTION

The following is a detailed description of the new cultivar as takenfrom nine month-old plants grown outdoors in 13-cm containers inLippenhuizen, The Netherlands with average day temperatures ranging from10° to 20° C. and average night temperatures ranging from 1° to 12° C.The phenotype of the new cultivar may vary with variations inenvironmental, climatic, and cultural conditions, as it has not beentested under all possible environmental conditions. The colordetermination is in accordance with The 2007 R.H.S. Colour Chart of TheRoyal Horticultural Society, London, England, except where general colorterms of ordinary dictionary significance are used.

-   General description:    -   -   Plant type.—Evergreen shrub.        -   Plant habit.—Compact, well-branched and creeping plant            habit.        -   Height and spread.—An average of 7.8 cm in height and 15.7            cm in width in a 13-cm container, matures in the landscape            to an average of 15 cm in height and 75 cm in spread.        -   Plant shape.—Flattened to low flattened globular shape.        -   Cold hardiness.—At least to U.S.D.A. Zone 5.        -   Diseases and pests.—No particular resistance and            susceptibility to diseases or pests have been observed to            date.        -   Root description.—Fibrous.        -   Growth rate.—Moderate.        -   Propagation.—Semi-hardwood cuttings.-   Stem description:    -   -   Stem shape.—Rounded.        -   Stem size.—Average of 7.8 cm in length and 2 mm in diameter.        -   Stem surface.—Glabrous and matte when young and bark is            flaky when mature.        -   Branching.—Main stems grow from base and have an average of            9 lateral branches.        -   Stem aspect.—Very strong, held at an average angle of 80° to            main stem.        -   Internode length.—Average of 1 mm.        -   Stem color.—Young stems; N138C, mature bark, 200B.-   Foliage description:    -   -   Leaf arrangement.—Opposite.        -   Leaf attachment.—Sessile.        -   Leaf shape.—Lanceolate, scale-like.        -   Leaf division.—Simple.        -   Leaf base.—Cuneate.        -   Leaf apex.—Sharply pointed and moderately sharp to the            touch.        -   Leaf venation.—Not distinguishable.        -   Leaf stomata.—Two present on lower surface divided by the            rib, color 115D.        -   Leaf margins.—Entire.        -   Leaf fragrance.—When crushed, the foliage produces a strong            pleasant smell.        -   Leaf surface.—Upper and lower surfaces; waxy, glabrous and            matte.        -   Leaf color.—Young upper surface; 122C, young lower surface;            143A to 143B, mature upper surface; 137B and slightly tinged            with 122B, mature lower surface; 137C.        -   Leaf size.—An average of 6 mm in length and 1.8 mm in width.        -   Leaf quantity.—Average of 600 scale-like leaves per lateral            branch.-   Inflorescence description: No flowers have been observed to date.-   Fruit and seed description: No cones or seeds have been observed to    date.

It is claimed:
 1. A new and distinct cultivar of Juniperus plant named‘Little Joanna’ as herein illustrated and described.